I ran the first command and got no response, so not sure if it did anything. However when I ran the second command I got this:
[root@MyBookWorld ~]# echo "/opt/lib" »/etc/ld.so.conf
[root@MyBookWorld ~]# ldconfig
ldconfig: skipping /opt/lib: No such file or directory
ldconfig: skipping /opt/lib: No such file or directory

Regarding your ld.so.conf,
it should contain only one line "/opt/lib"
==> try the following command to display the content of the file :
type /etc/ld.so.conf
Check that there is nothing strange…
also check if /opt/lib folder exists …

This will install automatically a friendly user interface which will allow you to :
- Configure OPTWARE correctly with a few clicks
- Configure your Web interfaces in "On demand" mode to save memory, ( Click)
- Configure your mybook as a secure Web server ( in order to remote control of it over internet)
- Configure AccessBook ( Click- click )
- Disable/enable Mionet when you want ( Click)
- Configure an email report to be sent to your email indicating disk usage every week… (Click tap-a-tap clickclick. )
- Add Feature packs when they are released…